Quote from Two Cathedrals

I like the sentiment expressed in the following quote. I like the idea that it is acceptable not to do something if you are not interested, but it is unacceptable if you don't do something because you think that it is too hard or that you will fail.

You know, if you don't want to run again, I respect that. But if you don't run because you thinks its going to be too hard or you think that you are going to lose, well god Jed, I don't even want to know you.